Date: Fri, 28 Apr 2000 21:44:20 -0700 (MST) From: John Reynolds <jjreynold@home.com> To: scsi@freebsd.org Subject: hardware meltdown or cosmic ray? Message-ID: <14602.26788.441429.641364@whale.home-net>
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Ok. I've got a question I know that one of you SCSI gurus can help with. I was copying some CDs (data) tonight. Rather than chance buffer underrun, I was copying the entire disc onto an empty chunk o' disk, then burning those ISOs. The command I submitted to copy the cd was: dd if=/dev/cd0c of=disc.iso It chugged along with about 200Mb or so snarfed off the disc, then I got these messages appearing on my console and the whole SCSI subsystem went "dead" (during the timeouts) Apr 28 18:44:17 whale /kernel: dscheck: b_bcount 512 is not on a sector boundary (ssize 2048) Apr 28 18:47:04 whale /kernel: (cd0:ahc0:0:3:0): SCB 0x2 - timed out in dataout phase, SEQADDR == 0x5d Apr 28 18:47:40 whale /kernel: (cd0:ahc0:0:3:0): Other SCB Timeout Apr 28 18:47:40 whale /kernel: (da1:ahc0:0:6:0): SCB 0x3b - timed out in dataout phase, SEQADDR == 0x5d Apr 28 18:47:40 whale /kernel: (da1:ahc0:0:6:0): BDR message in message buffer Apr 28 18:47:40 whale /kernel: (da1:ahc0:0:6:0): SCB 0x2d - timed out in dataout phase, SEQADDR == 0x5d Apr 28 18:47:40 whale /kernel: (da1:ahc0:0:6:0): no longer in timeout, status = 34b Apr 28 18:47:40 whale /kernel: ahc0: Issued Channel A Bus Reset. 7 SCBs aborted Apr 28 20:54:05 whale /kernel: swap_pager: indefinite wait buffer: device: 0x30401, blkno: 50456, size: 36864 Apr 28 20:54:48 whale /kernel: (cd0:ahc0:0:3:0): SCB 0x5 - timed out in dataout phase, SEQADDR == 0x5d Apr 28 20:54:48 whale /kernel: (cd0:ahc0:0:3:0): Other SCB Timeout Apr 28 20:54:48 whale /kernel: swap_pager: indefinite wait buffer: device: 0x30401, blkno: 11536, size: 4096 Apr 28 20:54:48 whale /kernel: swap_pager: indefinite wait buffer: device: 0x30401, blkno: 50456, size: 36864 Apr 28 20:54:48 whale /kernel: (da1:ahc0:0:6:0): SCB 0x11 - timed out in dataout phase, SEQADDR == 0x5d Apr 28 20:54:48 whale /kernel: (da1:ahc0:0:6:0): BDR message in message buffer Apr 28 20:54:48 whale /kernel: (da1:ahc0:0:6:0): SCB 0x11 - timed out in dataout phase, SEQADDR == 0x5e Apr 28 20:54:48 whale /kernel: (da1:ahc0:0:6:0): no longer in timeout, status = 34b Apr 28 20:54:48 whale /kernel: ahc0: Issued Channel A Bus Reset. 10 SCBs aborted Apr 28 20:54:48 whale /kernel: swap_pager: indefinite wait buffer: device: 0x30401, blkno: 11536, size: 4096 Apr 28 20:54:48 whale /kernel: swap_pager: indefinite wait buffer: device: 0x30401, blkno: 50456, size: 36864 At that point the machine was just hung solid and required the reset button. I then powered it down complete and brought it back up. A subsequent dd command produced no wierd behavior: root@whale [/data/isos]<21># dd if=/dev/cd0c of=disc.iso 985332+0 records in 985332+0 records out 504489984 bytes transferred in 224.169648 secs (2250483 bytes/sec) (not a full disc). Any idea by the looks of these error messages if I'm having some some sort of H/W meltdown or is your best guess that this was a random occurance (cosmic rays I like to blame)??? Everything seems "fine" at this point .... Thanks -Jr ps: using adaptec 7890 onboard scsi on a P2B-DS mo-board. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= John Reynolds Chandler Capabilities Engineering, CDS, Intel Corporation jreynold@sedona.ch.intel.com My opinions are mine, not Intel's. Running jjreynold@home.com FreeBSD 3.4-STABLE. FreeBSD: The Power to Serve. http://members.home.com/jjreynold/ Come join us!!! @ http://www.FreeBSD.org/ =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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